drivers/gpu/drm/radeon/radeon_gem.c

   1 /*
   2  * Copyright 2008 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  * Copyright 2009 Jerome Glisse.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors: Dave Airlie
  25  *          Alex Deucher
  26  *          Jerome Glisse
  27  */
  28 #include "drmP.h"
  29 #include "drm.h"
  30 #include "radeon_drm.h"
  31 #include "radeon.h"
  32
  33 int radeon_gem_object_init(struct drm_gem_object *obj)
  34 {
  35         /* we do nothings here */
  36         return 0;
  37 }
  38
  39 void radeon_gem_object_free(struct drm_gem_object *gobj)
  40 {
  41         struct radeon_object *robj = gobj->driver_private;
  42
  43         gobj->driver_private = NULL;
  44         if (robj) {
  45                 radeon_object_unref(&robj);
  46         }
  47 }
  48
  49 int radeon_gem_object_create(struct radeon_device *rdev, int size,
  50                              int alignment, int initial_domain,
  51                              bool discardable, bool kernel,
  52                              bool interruptible,
  53                              struct drm_gem_object **obj)
  54 {
  55         struct drm_gem_object *gobj;
  56         struct radeon_object *robj;
  57         int r;
  58
  59         *obj = NULL;
  60         gobj = drm_gem_object_alloc(rdev->ddev, size);
  61         if (!gobj) {
  62                 return -ENOMEM;
  63         }
  64         /* At least align on page size */
  65         if (alignment < PAGE_SIZE) {
  66                 alignment = PAGE_SIZE;
  67         }
  68         r = radeon_object_create(rdev, gobj, size, kernel, initial_domain,
  69                                  interruptible, &robj);
  70         if (r) {
  71                 DRM_ERROR("Failed to allocate GEM object (%d, %d, %u)\n",
  72                           size, initial_domain, alignment);
  73                 mutex_lock(&rdev->ddev->struct_mutex);
  74                 drm_gem_object_unreference(gobj);
  75                 mutex_unlock(&rdev->ddev->struct_mutex);
  76                 return r;
  77         }
  78         gobj->driver_private = robj;
  79         *obj = gobj;
  80         return 0;
  81 }
  82
  83 int radeon_gem_object_pin(struct drm_gem_object *obj, uint32_t pin_domain,
  84                           uint64_t *gpu_addr)
  85 {
  86         struct radeon_object *robj = obj->driver_private;
  87         uint32_t flags;
  88
  89         switch (pin_domain) {
  90         case RADEON_GEM_DOMAIN_VRAM:
  91                 flags = TTM_PL_FLAG_VRAM;
  92                 break;
  93         case RADEON_GEM_DOMAIN_GTT:
  94                 flags = TTM_PL_FLAG_TT;
  95                 break;
  96         default:
  97                 flags = TTM_PL_FLAG_SYSTEM;
  98                 break;
  99         }
 100         return radeon_object_pin(robj, flags, gpu_addr);
 101 }
 102
 103 void radeon_gem_object_unpin(struct drm_gem_object *obj)
 104 {
 105         struct radeon_object *robj = obj->driver_private;
 106         radeon_object_unpin(robj);
 107 }
 108
 109 int radeon_gem_set_domain(struct drm_gem_object *gobj,
 110                           uint32_t rdomain, uint32_t wdomain)
 111 {
 112         struct radeon_object *robj;
 113         uint32_t domain;
 114         int r;
 115
 116         /* FIXME: reeimplement */
 117         robj = gobj->driver_private;
 118         /* work out where to validate the buffer to */
 119         domain = wdomain;
 120         if (!domain) {
 121                 domain = rdomain;
 122         }
 123         if (!domain) {
 124                 /* Do nothings */
 125                 printk(KERN_WARNING "Set domain withou domain !\n");
 126                 return 0;
 127         }
 128         if (domain == RADEON_GEM_DOMAIN_CPU) {
 129                 /* Asking for cpu access wait for object idle */
 130                 r = radeon_object_wait(robj);
 131                 if (r) {
 132                         printk(KERN_ERR "Failed to wait for object !\n");
 133                         return r;
 134                 }
 135         }
 136         return 0;
 137 }
 138
 139 int radeon_gem_init(struct radeon_device *rdev)
 140 {
 141         INIT_LIST_HEAD(&rdev->gem.objects);
 142         return 0;
 143 }
 144
 145 void radeon_gem_fini(struct radeon_device *rdev)
 146 {
 147         radeon_object_force_delete(rdev);
 148 }
 149
 150
 151 /*
 152  * GEM ioctls.
 153  */
 154 int radeon_gem_info_ioctl(struct drm_device *dev, void *data,
 155                           struct drm_file *filp)
 156 {
 157         struct radeon_device *rdev = dev->dev_private;
 158         struct drm_radeon_gem_info *args = data;
 159
 160         args->vram_size = rdev->mc.vram_size;
 161         /* FIXME: report somethings that makes sense */
 162         args->vram_visible = rdev->mc.vram_size - (4 * 1024 * 1024);
 163         args->gart_size = rdev->mc.gtt_size;
 164         return 0;
 165 }
 166
 167 int radeon_gem_pread_ioctl(struct drm_device *dev, void *data,
 168                            struct drm_file *filp)
 169 {
 170         /* TODO: implement */
 171         DRM_ERROR("unimplemented %s\n", __func__);
 172         return -ENOSYS;
 173 }
 174
 175 int radeon_gem_pwrite_ioctl(struct drm_device *dev, void *data,
 176                             struct drm_file *filp)
 177 {
 178         /* TODO: implement */
 179         DRM_ERROR("unimplemented %s\n", __func__);
 180         return -ENOSYS;
 181 }
 182
 183 int radeon_gem_create_ioctl(struct drm_device *dev, void *data,
 184                             struct drm_file *filp)
 185 {
 186         struct radeon_device *rdev = dev->dev_private;
 187         struct drm_radeon_gem_create *args = data;
 188         struct drm_gem_object *gobj;
 189         uint32_t handle;
 190         int r;
 191
 192         /* create a gem object to contain this object in */
 193         args->size = roundup(args->size, PAGE_SIZE);
 194         r = radeon_gem_object_create(rdev, args->size, args->alignment,
 195                                      args->initial_domain, false,
 196                                      false, true, &gobj);
 197         if (r) {
 198                 return r;
 199         }
 200         r = drm_gem_handle_create(filp, gobj, &handle);
 201         if (r) {
 202                 mutex_lock(&dev->struct_mutex);
 203                 drm_gem_object_unreference(gobj);
 204                 mutex_unlock(&dev->struct_mutex);
 205                 return r;
 206         }
 207         mutex_lock(&dev->struct_mutex);
 208         drm_gem_object_handle_unreference(gobj);
 209         mutex_unlock(&dev->struct_mutex);
 210         args->handle = handle;
 211         return 0;
 212 }
 213
 214 int radeon_gem_set_domain_ioctl(struct drm_device *dev, void *data,
 215                                 struct drm_file *filp)
 216 {
 217         /* transition the BO to a domain -
 218          * just validate the BO into a certain domain */
 219         struct drm_radeon_gem_set_domain *args = data;
 220         struct drm_gem_object *gobj;
 221         struct radeon_object *robj;
 222         int r;
 223
 224         /* for now if someone requests domain CPU -
 225          * just make sure the buffer is finished with */
 226
 227         /* just do a BO wait for now */
 228         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 229         if (gobj == NULL) {
 230                 return -EINVAL;
 231         }
 232         robj = gobj->driver_private;
 233
 234         r = radeon_gem_set_domain(gobj, args->read_domains, args->write_domain);
 235
 236         mutex_lock(&dev->struct_mutex);
 237         drm_gem_object_unreference(gobj);
 238         mutex_unlock(&dev->struct_mutex);
 239         return r;
 240 }
 241
 242 int radeon_gem_mmap_ioctl(struct drm_device *dev, void *data,
 243                           struct drm_file *filp)
 244 {
 245         struct drm_radeon_gem_mmap *args = data;
 246         struct drm_gem_object *gobj;
 247         struct radeon_object *robj;
 248         int r;
 249
 250         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 251         if (gobj == NULL) {
 252                 return -EINVAL;
 253         }
 254         robj = gobj->driver_private;
 255         r = radeon_object_mmap(robj, &args->addr_ptr);
 256         mutex_lock(&dev->struct_mutex);
 257         drm_gem_object_unreference(gobj);
 258         mutex_unlock(&dev->struct_mutex);
 259         return r;
 260 }
 261
 262 int radeon_gem_busy_ioctl(struct drm_device *dev, void *data,
 263                           struct drm_file *filp)
 264 {
 265         /* FIXME: implement */
 266         return 0;
 267 }
 268
 269 int radeon_gem_wait_idle_ioctl(struct drm_device *dev, void *data,
 270                               struct drm_file *filp)
 271 {
 272         struct drm_radeon_gem_wait_idle *args = data;
 273         struct drm_gem_object *gobj;
 274         struct radeon_object *robj;
 275         int r;
 276
 277         gobj = drm_gem_object_lookup(dev, filp, args->handle);
 278         if (gobj == NULL) {
 279                 return -EINVAL;
 280         }
 281         robj = gobj->driver_private;
 282         r = radeon_object_wait(robj);
 283         mutex_lock(&dev->struct_mutex);
 284         drm_gem_object_unreference(gobj);
 285         mutex_unlock(&dev->struct_mutex);
 286         return r;
 287 }